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3754 lines (3448 loc) · 154 KB
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"""Wrapper functions for Tcl/Tk.
Tkinter provides classes which allow the display, positioning and
control of widgets. Toplevel widgets are Tk and Toplevel. Other
widgets are Frame, Label, Entry, Text, Canvas, Button, Radiobutton,
Checkbutton, Scale, Listbox, Scrollbar, OptionMenu, Spinbox
LabelFrame and PanedWindow.
Properties of the widgets are specified with keyword arguments.
Keyword arguments have the same name as the corresponding resource
under Tk.
Widgets are positioned with one of the geometry managers Place, Pack
or Grid. These managers can be called with methods place, pack, grid
available in every Widget.
Actions are bound to events by resources (e.g. keyword argument
command) or with the method bind.
Example (Hello, World):
import tkinter
from tkinter.constants import *
tk = tkinter.Tk()
frame = tkinter.Frame(tk, relief=RIDGE, borderwidth=2)
frame.pack(fill=BOTH,expand=1)
label = tkinter.Label(frame, text="Hello, World")
label.pack(fill=X, expand=1)
button = tkinter.Button(frame,text="Exit",command=tk.destroy)
button.pack(side=BOTTOM)
tk.mainloop()
"""
__version__ = "$Revision$"
import sys
if sys.platform == "win32":
# Attempt to configure Tcl/Tk without requiring PATH
from tkinter import _fix
import _tkinter # If this fails your Python may not be configured for Tk
TclError = _tkinter.TclError
from tkinter.constants import *
wantobjects = 1
TkVersion = float(_tkinter.TK_VERSION)
TclVersion = float(_tkinter.TCL_VERSION)
READABLE = _tkinter.READABLE
WRITABLE = _tkinter.WRITABLE
EXCEPTION = _tkinter.EXCEPTION
def _flatten(seq):
"""Internal function."""
res = ()
for item in seq:
if isinstance(item, (tuple, list)):
res = res + _flatten(item)
elif item is not None:
res = res + (item,)
return res
try: _flatten = _tkinter._flatten
except AttributeError: pass
def _cnfmerge(cnfs):
"""Internal function."""
if isinstance(cnfs, dict):
return cnfs
elif isinstance(cnfs, (type(None), str)):
return cnfs
else:
cnf = {}
for c in _flatten(cnfs):
try:
cnf.update(c)
except (AttributeError, TypeError) as msg:
print("_cnfmerge: fallback due to:", msg)
for k, v in c.items():
cnf[k] = v
return cnf
try: _cnfmerge = _tkinter._cnfmerge
except AttributeError: pass
class Event:
"""Container for the properties of an event.
Instances of this type are generated if one of the following events occurs:
KeyPress, KeyRelease - for keyboard events
ButtonPress, ButtonRelease, Motion, Enter, Leave, MouseWheel - for mouse events
Visibility, Unmap, Map, Expose, FocusIn, FocusOut, Circulate,
Colormap, Gravity, Reparent, Property, Destroy, Activate,
Deactivate - for window events.
If a callback function for one of these events is registered
using bind, bind_all, bind_class, or tag_bind, the callback is
called with an Event as first argument. It will have the
following attributes (in braces are the event types for which
the attribute is valid):
serial - serial number of event
num - mouse button pressed (ButtonPress, ButtonRelease)
focus - whether the window has the focus (Enter, Leave)
height - height of the exposed window (Configure, Expose)
width - width of the exposed window (Configure, Expose)
keycode - keycode of the pressed key (KeyPress, KeyRelease)
state - state of the event as a number (ButtonPress, ButtonRelease,
Enter, KeyPress, KeyRelease,
Leave, Motion)
state - state as a string (Visibility)
time - when the event occurred
x - x-position of the mouse
y - y-position of the mouse
x_root - x-position of the mouse on the screen
(ButtonPress, ButtonRelease, KeyPress, KeyRelease, Motion)
y_root - y-position of the mouse on the screen
(ButtonPress, ButtonRelease, KeyPress, KeyRelease, Motion)
char - pressed character (KeyPress, KeyRelease)
send_event - see X/Windows documentation
keysym - keysym of the event as a string (KeyPress, KeyRelease)
keysym_num - keysym of the event as a number (KeyPress, KeyRelease)
type - type of the event as a number
widget - widget in which the event occurred
delta - delta of wheel movement (MouseWheel)
"""
pass
_support_default_root = 1
_default_root = None
def NoDefaultRoot():
"""Inhibit setting of default root window.
Call this function to inhibit that the first instance of
Tk is used for windows without an explicit parent window.
"""
global _support_default_root
_support_default_root = 0
global _default_root
_default_root = None
del _default_root
def _tkerror(err):
"""Internal function."""
pass
def _exit(code='0'):
"""Internal function. Calling it will throw the exception SystemExit."""
raise SystemExit(code)
_varnum = 0
class Variable:
"""Class to define value holders for e.g. buttons.
Subclasses StringVar, IntVar, DoubleVar, BooleanVar are specializations
that constrain the type of the value returned from get()."""
_default = ""
def __init__(self, master=None, value=None, name=None):
"""Construct a variable
MASTER can be given as master widget.
VALUE is an optional value (defaults to "")
NAME is an optional Tcl name (defaults to PY_VARnum).
If NAME matches an existing variable and VALUE is omitted
then the existing value is retained.
"""
global _varnum
if not master:
master = _default_root
self._master = master
self._tk = master.tk
if name:
self._name = name
else:
self._name = 'PY_VAR' + repr(_varnum)
_varnum += 1
if value is not None:
self.set(value)
elif not self._tk.call("info", "exists", self._name):
self.set(self._default)
def __del__(self):
"""Unset the variable in Tcl."""
self._tk.globalunsetvar(self._name)
def __str__(self):
"""Return the name of the variable in Tcl."""
return self._name
def set(self, value):
"""Set the variable to VALUE."""
return self._tk.globalsetvar(self._name, value)
def get(self):
"""Return value of variable."""
return self._tk.globalgetvar(self._name)
def trace_variable(self, mode, callback):
"""Define a trace callback for the variable.
MODE is one of "r", "w", "u" for read, write, undefine.
CALLBACK must be a function which is called when
the variable is read, written or undefined.
Return the name of the callback.
"""
cbname = self._master._register(callback)
self._tk.call("trace", "variable", self._name, mode, cbname)
return cbname
trace = trace_variable
def trace_vdelete(self, mode, cbname):
"""Delete the trace callback for a variable.
MODE is one of "r", "w", "u" for read, write, undefine.
CBNAME is the name of the callback returned from trace_variable or trace.
"""
self._tk.call("trace", "vdelete", self._name, mode, cbname)
self._master.deletecommand(cbname)
def trace_vinfo(self):
"""Return all trace callback information."""
return map(self._tk.split, self._tk.splitlist(
self._tk.call("trace", "vinfo", self._name)))
def __eq__(self, other):
"""Comparison for equality (==).
Note: if the Variable's master matters to behavior
also compare self._master == other._master
"""
return self.__class__.__name__ == other.__class__.__name__ \
and self._name == other._name
class StringVar(Variable):
"""Value holder for strings variables."""
_default = ""
def __init__(self, master=None, value=None, name=None):
"""Construct a string variable.
MASTER can be given as master widget.
VALUE is an optional value (defaults to "")
NAME is an optional Tcl name (defaults to PY_VARnum).
If NAME matches an existing variable and VALUE is omitted
then the existing value is retained.
"""
Variable.__init__(self, master, value, name)
def get(self):
"""Return value of variable as string."""
value = self._tk.globalgetvar(self._name)
if isinstance(value, str):
return value
return str(value)
class IntVar(Variable):
"""Value holder for integer variables."""
_default = 0
def __init__(self, master=None, value=None, name=None):
"""Construct an integer variable.
MASTER can be given as master widget.
VALUE is an optional value (defaults to 0)
NAME is an optional Tcl name (defaults to PY_VARnum).
If NAME matches an existing variable and VALUE is omitted
then the existing value is retained.
"""
Variable.__init__(self, master, value, name)
def set(self, value):
"""Set the variable to value, converting booleans to integers."""
if isinstance(value, bool):
value = int(value)
return Variable.set(self, value)
def get(self):
"""Return the value of the variable as an integer."""
return getint(self._tk.globalgetvar(self._name))
class DoubleVar(Variable):
"""Value holder for float variables."""
_default = 0.0
def __init__(self, master=None, value=None, name=None):
"""Construct a float variable.
MASTER can be given as master widget.
VALUE is an optional value (defaults to 0.0)
NAME is an optional Tcl name (defaults to PY_VARnum).
If NAME matches an existing variable and VALUE is omitted
then the existing value is retained.
"""
Variable.__init__(self, master, value, name)
def get(self):
"""Return the value of the variable as a float."""
return getdouble(self._tk.globalgetvar(self._name))
class BooleanVar(Variable):
"""Value holder for boolean variables."""
_default = False
def __init__(self, master=None, value=None, name=None):
"""Construct a boolean variable.
MASTER can be given as master widget.
VALUE is an optional value (defaults to False)
NAME is an optional Tcl name (defaults to PY_VARnum).
If NAME matches an existing variable and VALUE is omitted
then the existing value is retained.
"""
Variable.__init__(self, master, value, name)
def get(self):
"""Return the value of the variable as a bool."""
return self._tk.getboolean(self._tk.globalgetvar(self._name))
def mainloop(n=0):
"""Run the main loop of Tcl."""
_default_root.tk.mainloop(n)
getint = int
getdouble = float
def getboolean(s):
"""Convert true and false to integer values 1 and 0."""
return _default_root.tk.getboolean(s)
# Methods defined on both toplevel and interior widgets
class Misc:
"""Internal class.
Base class which defines methods common for interior widgets."""
# XXX font command?
_tclCommands = None
def destroy(self):
"""Internal function.
Delete all Tcl commands created for
this widget in the Tcl interpreter."""
if self._tclCommands is not None:
for name in self._tclCommands:
#print '- Tkinter: deleted command', name
self.tk.deletecommand(name)
self._tclCommands = None
def deletecommand(self, name):
"""Internal function.
Delete the Tcl command provided in NAME."""
#print '- Tkinter: deleted command', name
self.tk.deletecommand(name)
try:
self._tclCommands.remove(name)
except ValueError:
pass
def tk_strictMotif(self, boolean=None):
"""Set Tcl internal variable, whether the look and feel
should adhere to Motif.
A parameter of 1 means adhere to Motif (e.g. no color
change if mouse passes over slider).
Returns the set value."""
return self.tk.getboolean(self.tk.call(
'set', 'tk_strictMotif', boolean))
def tk_bisque(self):
"""Change the color scheme to light brown as used in Tk 3.6 and before."""
self.tk.call('tk_bisque')
def tk_setPalette(self, *args, **kw):
"""Set a new color scheme for all widget elements.
A single color as argument will cause that all colors of Tk
widget elements are derived from this.
Alternatively several keyword parameters and its associated
colors can be given. The following keywords are valid:
activeBackground, foreground, selectColor,
activeForeground, highlightBackground, selectBackground,
background, highlightColor, selectForeground,
disabledForeground, insertBackground, troughColor."""
self.tk.call(('tk_setPalette',)
+ _flatten(args) + _flatten(kw.items()))
def tk_menuBar(self, *args):
"""Do not use. Needed in Tk 3.6 and earlier."""
pass # obsolete since Tk 4.0
def wait_variable(self, name='PY_VAR'):
"""Wait until the variable is modified.
A parameter of type IntVar, StringVar, DoubleVar or
BooleanVar must be given."""
self.tk.call('tkwait', 'variable', name)
waitvar = wait_variable # XXX b/w compat
def wait_window(self, window=None):
"""Wait until a WIDGET is destroyed.
If no parameter is given self is used."""
if window is None:
window = self
self.tk.call('tkwait', 'window', window._w)
def wait_visibility(self, window=None):
"""Wait until the visibility of a WIDGET changes
(e.g. it appears).
If no parameter is given self is used."""
if window is None:
window = self
self.tk.call('tkwait', 'visibility', window._w)
def setvar(self, name='PY_VAR', value='1'):
"""Set Tcl variable NAME to VALUE."""
self.tk.setvar(name, value)
def getvar(self, name='PY_VAR'):
"""Return value of Tcl variable NAME."""
return self.tk.getvar(name)
getint = int
getdouble = float
def getboolean(self, s):
"""Return a boolean value for Tcl boolean values true and false given as parameter."""
return self.tk.getboolean(s)
def focus_set(self):
"""Direct input focus to this widget.
If the application currently does not have the focus
this widget will get the focus if the application gets
the focus through the window manager."""
self.tk.call('focus', self._w)
focus = focus_set # XXX b/w compat?
def focus_force(self):
"""Direct input focus to this widget even if the
application does not have the focus. Use with
caution!"""
self.tk.call('focus', '-force', self._w)
def focus_get(self):
"""Return the widget which has currently the focus in the
application.
Use focus_displayof to allow working with several
displays. Return None if application does not have
the focus."""
name = self.tk.call('focus')
if name == 'none' or not name: return None
return self._nametowidget(name)
def focus_displayof(self):
"""Return the widget which has currently the focus on the
display where this widget is located.
Return None if the application does not have the focus."""
name = self.tk.call('focus', '-displayof', self._w)
if name == 'none' or not name: return None
return self._nametowidget(name)
def focus_lastfor(self):
"""Return the widget which would have the focus if top level
for this widget gets the focus from the window manager."""
name = self.tk.call('focus', '-lastfor', self._w)
if name == 'none' or not name: return None
return self._nametowidget(name)
def tk_focusFollowsMouse(self):
"""The widget under mouse will get automatically focus. Can not
be disabled easily."""
self.tk.call('tk_focusFollowsMouse')
def tk_focusNext(self):
"""Return the next widget in the focus order which follows
widget which has currently the focus.
The focus order first goes to the next child, then to
the children of the child recursively and then to the
next sibling which is higher in the stacking order. A
widget is omitted if it has the takefocus resource set
to 0."""
name = self.tk.call('tk_focusNext', self._w)
if not name: return None
return self._nametowidget(name)
def tk_focusPrev(self):
"""Return previous widget in the focus order. See tk_focusNext for details."""
name = self.tk.call('tk_focusPrev', self._w)
if not name: return None
return self._nametowidget(name)
def after(self, ms, func=None, *args):
"""Call function once after given time.
MS specifies the time in milliseconds. FUNC gives the
function which shall be called. Additional parameters
are given as parameters to the function call. Return
identifier to cancel scheduling with after_cancel."""
if not func:
# I'd rather use time.sleep(ms*0.001)
self.tk.call('after', ms)
else:
def callit():
try:
func(*args)
finally:
try:
self.deletecommand(name)
except TclError:
pass
name = self._register(callit)
return self.tk.call('after', ms, name)
def after_idle(self, func, *args):
"""Call FUNC once if the Tcl main loop has no event to
process.
Return an identifier to cancel the scheduling with
after_cancel."""
return self.after('idle', func, *args)
def after_cancel(self, id):
"""Cancel scheduling of function identified with ID.
Identifier returned by after or after_idle must be
given as first parameter."""
try:
data = self.tk.call('after', 'info', id)
# In Tk 8.3, splitlist returns: (script, type)
# In Tk 8.4, splitlist may return (script, type) or (script,)
script = self.tk.splitlist(data)[0]
self.deletecommand(script)
except TclError:
pass
self.tk.call('after', 'cancel', id)
def bell(self, displayof=0):
"""Ring a display's bell."""
self.tk.call(('bell',) + self._displayof(displayof))
# Clipboard handling:
def clipboard_get(self, **kw):
"""Retrieve data from the clipboard on window's display.
The window keyword defaults to the root window of the Tkinter
application.
The type keyword specifies the form in which the data is
to be returned and should be an atom name such as STRING
or FILE_NAME. Type defaults to STRING.
This command is equivalent to:
selection_get(CLIPBOARD)
"""
return self.tk.call(('clipboard', 'get') + self._options(kw))
def clipboard_clear(self, **kw):
"""Clear the data in the Tk clipboard.
A widget specified for the optional displayof keyword
argument specifies the target display."""
if 'displayof' not in kw: kw['displayof'] = self._w
self.tk.call(('clipboard', 'clear') + self._options(kw))
def clipboard_append(self, string, **kw):
"""Append STRING to the Tk clipboard.
A widget specified at the optional displayof keyword
argument specifies the target display. The clipboard
can be retrieved with selection_get."""
if 'displayof' not in kw: kw['displayof'] = self._w
self.tk.call(('clipboard', 'append') + self._options(kw)
+ ('--', string))
# XXX grab current w/o window argument
def grab_current(self):
"""Return widget which has currently the grab in this application
or None."""
name = self.tk.call('grab', 'current', self._w)
if not name: return None
return self._nametowidget(name)
def grab_release(self):
"""Release grab for this widget if currently set."""
self.tk.call('grab', 'release', self._w)
def grab_set(self):
"""Set grab for this widget.
A grab directs all events to this and descendant
widgets in the application."""
self.tk.call('grab', 'set', self._w)
def grab_set_global(self):
"""Set global grab for this widget.
A global grab directs all events to this and
descendant widgets on the display. Use with caution -
other applications do not get events anymore."""
self.tk.call('grab', 'set', '-global', self._w)
def grab_status(self):
"""Return None, "local" or "global" if this widget has
no, a local or a global grab."""
status = self.tk.call('grab', 'status', self._w)
if status == 'none': status = None
return status
def option_add(self, pattern, value, priority = None):
"""Set a VALUE (second parameter) for an option
PATTERN (first parameter).
An optional third parameter gives the numeric priority
(defaults to 80)."""
self.tk.call('option', 'add', pattern, value, priority)
def option_clear(self):
"""Clear the option database.
It will be reloaded if option_add is called."""
self.tk.call('option', 'clear')
def option_get(self, name, className):
"""Return the value for an option NAME for this widget
with CLASSNAME.
Values with higher priority override lower values."""
return self.tk.call('option', 'get', self._w, name, className)
def option_readfile(self, fileName, priority = None):
"""Read file FILENAME into the option database.
An optional second parameter gives the numeric
priority."""
self.tk.call('option', 'readfile', fileName, priority)
def selection_clear(self, **kw):
"""Clear the current X selection."""
if 'displayof' not in kw: kw['displayof'] = self._w
self.tk.call(('selection', 'clear') + self._options(kw))
def selection_get(self, **kw):
"""Return the contents of the current X selection.
A keyword parameter selection specifies the name of
the selection and defaults to PRIMARY. A keyword
parameter displayof specifies a widget on the display
to use."""
if 'displayof' not in kw: kw['displayof'] = self._w
return self.tk.call(('selection', 'get') + self._options(kw))
def selection_handle(self, command, **kw):
"""Specify a function COMMAND to call if the X
selection owned by this widget is queried by another
application.
This function must return the contents of the
selection. The function will be called with the
arguments OFFSET and LENGTH which allows the chunking
of very long selections. The following keyword
parameters can be provided:
selection - name of the selection (default PRIMARY),
type - type of the selection (e.g. STRING, FILE_NAME)."""
name = self._register(command)
self.tk.call(('selection', 'handle') + self._options(kw)
+ (self._w, name))
def selection_own(self, **kw):
"""Become owner of X selection.
A keyword parameter selection specifies the name of
the selection (default PRIMARY)."""
self.tk.call(('selection', 'own') +
self._options(kw) + (self._w,))
def selection_own_get(self, **kw):
"""Return owner of X selection.
The following keyword parameter can
be provided:
selection - name of the selection (default PRIMARY),
type - type of the selection (e.g. STRING, FILE_NAME)."""
if 'displayof' not in kw: kw['displayof'] = self._w
name = self.tk.call(('selection', 'own') + self._options(kw))
if not name: return None
return self._nametowidget(name)
def send(self, interp, cmd, *args):
"""Send Tcl command CMD to different interpreter INTERP to be executed."""
return self.tk.call(('send', interp, cmd) + args)
def lower(self, belowThis=None):
"""Lower this widget in the stacking order."""
self.tk.call('lower', self._w, belowThis)
def tkraise(self, aboveThis=None):
"""Raise this widget in the stacking order."""
self.tk.call('raise', self._w, aboveThis)
lift = tkraise
def colormodel(self, value=None):
"""Useless. Not implemented in Tk."""
return self.tk.call('tk', 'colormodel', self._w, value)
def winfo_atom(self, name, displayof=0):
"""Return integer which represents atom NAME."""
args = ('winfo', 'atom') + self._displayof(displayof) + (name,)
return getint(self.tk.call(args))
def winfo_atomname(self, id, displayof=0):
"""Return name of atom with identifier ID."""
args = ('winfo', 'atomname') \
+ self._displayof(displayof) + (id,)
return self.tk.call(args)
def winfo_cells(self):
"""Return number of cells in the colormap for this widget."""
return getint(
self.tk.call('winfo', 'cells', self._w))
def winfo_children(self):
"""Return a list of all widgets which are children of this widget."""
result = []
for child in self.tk.splitlist(
self.tk.call('winfo', 'children', self._w)):
try:
# Tcl sometimes returns extra windows, e.g. for
# menus; those need to be skipped
result.append(self._nametowidget(child))
except KeyError:
pass
return result
def winfo_class(self):
"""Return window class name of this widget."""
return self.tk.call('winfo', 'class', self._w)
def winfo_colormapfull(self):
"""Return true if at the last color request the colormap was full."""
return self.tk.getboolean(
self.tk.call('winfo', 'colormapfull', self._w))
def winfo_containing(self, rootX, rootY, displayof=0):
"""Return the widget which is at the root coordinates ROOTX, ROOTY."""
args = ('winfo', 'containing') \
+ self._displayof(displayof) + (rootX, rootY)
name = self.tk.call(args)
if not name: return None
return self._nametowidget(name)
def winfo_depth(self):
"""Return the number of bits per pixel."""
return getint(self.tk.call('winfo', 'depth', self._w))
def winfo_exists(self):
"""Return true if this widget exists."""
return getint(
self.tk.call('winfo', 'exists', self._w))
def winfo_fpixels(self, number):
"""Return the number of pixels for the given distance NUMBER
(e.g. "3c") as float."""
return getdouble(self.tk.call(
'winfo', 'fpixels', self._w, number))
def winfo_geometry(self):
"""Return geometry string for this widget in the form "widthxheight+X+Y"."""
return self.tk.call('winfo', 'geometry', self._w)
def winfo_height(self):
"""Return height of this widget."""
return getint(
self.tk.call('winfo', 'height', self._w))
def winfo_id(self):
"""Return identifier ID for this widget."""
return self.tk.getint(
self.tk.call('winfo', 'id', self._w))
def winfo_interps(self, displayof=0):
"""Return the name of all Tcl interpreters for this display."""
args = ('winfo', 'interps') + self._displayof(displayof)
return self.tk.splitlist(self.tk.call(args))
def winfo_ismapped(self):
"""Return true if this widget is mapped."""
return getint(
self.tk.call('winfo', 'ismapped', self._w))
def winfo_manager(self):
"""Return the window mananger name for this widget."""
return self.tk.call('winfo', 'manager', self._w)
def winfo_name(self):
"""Return the name of this widget."""
return self.tk.call('winfo', 'name', self._w)
def winfo_parent(self):
"""Return the name of the parent of this widget."""
return self.tk.call('winfo', 'parent', self._w)
def winfo_pathname(self, id, displayof=0):
"""Return the pathname of the widget given by ID."""
args = ('winfo', 'pathname') \
+ self._displayof(displayof) + (id,)
return self.tk.call(args)
def winfo_pixels(self, number):
"""Rounded integer value of winfo_fpixels."""
return getint(
self.tk.call('winfo', 'pixels', self._w, number))
def winfo_pointerx(self):
"""Return the x coordinate of the pointer on the root window."""
return getint(
self.tk.call('winfo', 'pointerx', self._w))
def winfo_pointerxy(self):
"""Return a tuple of x and y coordinates of the pointer on the root window."""
return self._getints(
self.tk.call('winfo', 'pointerxy', self._w))
def winfo_pointery(self):
"""Return the y coordinate of the pointer on the root window."""
return getint(
self.tk.call('winfo', 'pointery', self._w))
def winfo_reqheight(self):
"""Return requested height of this widget."""
return getint(
self.tk.call('winfo', 'reqheight', self._w))
def winfo_reqwidth(self):
"""Return requested width of this widget."""
return getint(
self.tk.call('winfo', 'reqwidth', self._w))
def winfo_rgb(self, color):
"""Return tuple of decimal values for red, green, blue for
COLOR in this widget."""
return self._getints(
self.tk.call('winfo', 'rgb', self._w, color))
def winfo_rootx(self):
"""Return x coordinate of upper left corner of this widget on the
root window."""
return getint(
self.tk.call('winfo', 'rootx', self._w))
def winfo_rooty(self):
"""Return y coordinate of upper left corner of this widget on the
root window."""
return getint(
self.tk.call('winfo', 'rooty', self._w))
def winfo_screen(self):
"""Return the screen name of this widget."""
return self.tk.call('winfo', 'screen', self._w)
def winfo_screencells(self):
"""Return the number of the cells in the colormap of the screen
of this widget."""
return getint(
self.tk.call('winfo', 'screencells', self._w))
def winfo_screendepth(self):
"""Return the number of bits per pixel of the root window of the
screen of this widget."""
return getint(
self.tk.call('winfo', 'screendepth', self._w))
def winfo_screenheight(self):
"""Return the number of pixels of the height of the screen of this widget
in pixel."""
return getint(
self.tk.call('winfo', 'screenheight', self._w))
def winfo_screenmmheight(self):
"""Return the number of pixels of the height of the screen of
this widget in mm."""
return getint(
self.tk.call('winfo', 'screenmmheight', self._w))
def winfo_screenmmwidth(self):
"""Return the number of pixels of the width of the screen of
this widget in mm."""
return getint(
self.tk.call('winfo', 'screenmmwidth', self._w))
def winfo_screenvisual(self):
"""Return one of the strings directcolor, grayscale, pseudocolor,
staticcolor, staticgray, or truecolor for the default
colormodel of this screen."""
return self.tk.call('winfo', 'screenvisual', self._w)
def winfo_screenwidth(self):
"""Return the number of pixels of the width of the screen of
this widget in pixel."""
return getint(
self.tk.call('winfo', 'screenwidth', self._w))
def winfo_server(self):
"""Return information of the X-Server of the screen of this widget in
the form "XmajorRminor vendor vendorVersion"."""
return self.tk.call('winfo', 'server', self._w)
def winfo_toplevel(self):
"""Return the toplevel widget of this widget."""
return self._nametowidget(self.tk.call(
'winfo', 'toplevel', self._w))
def winfo_viewable(self):
"""Return true if the widget and all its higher ancestors are mapped."""
return getint(
self.tk.call('winfo', 'viewable', self._w))
def winfo_visual(self):
"""Return one of the strings directcolor, grayscale, pseudocolor,
staticcolor, staticgray, or truecolor for the
colormodel of this widget."""
return self.tk.call('winfo', 'visual', self._w)
def winfo_visualid(self):
"""Return the X identifier for the visual for this widget."""
return self.tk.call('winfo', 'visualid', self._w)
def winfo_visualsavailable(self, includeids=0):
"""Return a list of all visuals available for the screen
of this widget.
Each item in the list consists of a visual name (see winfo_visual), a
depth and if INCLUDEIDS=1 is given also the X identifier."""
data = self.tk.split(
self.tk.call('winfo', 'visualsavailable', self._w,
includeids and 'includeids' or None))
if isinstance(data, str):
data = [self.tk.split(data)]
return map(self.__winfo_parseitem, data)
def __winfo_parseitem(self, t):
"""Internal function."""
return t[:1] + tuple(map(self.__winfo_getint, t[1:]))
def __winfo_getint(self, x):
"""Internal function."""
return int(x, 0)
def winfo_vrootheight(self):
"""Return the height of the virtual root window associated with this
widget in pixels. If there is no virtual root window return the
height of the screen."""
return getint(
self.tk.call('winfo', 'vrootheight', self._w))
def winfo_vrootwidth(self):
"""Return the width of the virtual root window associated with this
widget in pixel. If there is no virtual root window return the
width of the screen."""
return getint(
self.tk.call('winfo', 'vrootwidth', self._w))
def winfo_vrootx(self):
"""Return the x offset of the virtual root relative to the root
window of the screen of this widget."""
return getint(
self.tk.call('winfo', 'vrootx', self._w))
def winfo_vrooty(self):
"""Return the y offset of the virtual root relative to the root
window of the screen of this widget."""
return getint(
self.tk.call('winfo', 'vrooty', self._w))
def winfo_width(self):
"""Return the width of this widget."""
return getint(
self.tk.call('winfo', 'width', self._w))
def winfo_x(self):
"""Return the x coordinate of the upper left corner of this widget
in the parent."""
return getint(
self.tk.call('winfo', 'x', self._w))
def winfo_y(self):
"""Return the y coordinate of the upper left corner of this widget
in the parent."""
return getint(
self.tk.call('winfo', 'y', self._w))
def update(self):
"""Enter event loop until all pending events have been processed by Tcl."""
self.tk.call('update')
def update_idletasks(self):
"""Enter event loop until all idle callbacks have been called. This
will update the display of windows but not process events caused by
the user."""
self.tk.call('update', 'idletasks')
def bindtags(self, tagList=None):
"""Set or get the list of bindtags for this widget.
With no argument return the list of all bindtags associated with
this widget. With a list of strings as argument the bindtags are
set to this list. The bindtags determine in which order events are
processed (see bind)."""
if tagList is None:
return self.tk.splitlist(
self.tk.call('bindtags', self._w))
else:
self.tk.call('bindtags', self._w, tagList)
def _bind(self, what, sequence, func, add, needcleanup=1):
"""Internal function."""
if isinstance(func, str):
self.tk.call(what + (sequence, func))
elif func:
funcid = self._register(func, self._substitute,
needcleanup)
cmd = ('%sif {"[%s %s]" == "break"} break\n'
%
(add and '+' or '',
funcid, self._subst_format_str))
self.tk.call(what + (sequence, cmd))
return funcid
elif sequence:
return self.tk.call(what + (sequence,))
else:
return self.tk.splitlist(self.tk.call(what))
def bind(self, sequence=None, func=None, add=None):
"""Bind to this widget at event SEQUENCE a call to function FUNC.
SEQUENCE is a string of concatenated event
patterns. An event pattern is of the form
<MODIFIER-MODIFIER-TYPE-DETAIL> where MODIFIER is one
of Control, Mod2, M2, Shift, Mod3, M3, Lock, Mod4, M4,
Button1, B1, Mod5, M5 Button2, B2, Meta, M, Button3,
B3, Alt, Button4, B4, Double, Button5, B5 Triple,
Mod1, M1. TYPE is one of Activate, Enter, Map,
ButtonPress, Button, Expose, Motion, ButtonRelease
FocusIn, MouseWheel, Circulate, FocusOut, Property,
Colormap, Gravity Reparent, Configure, KeyPress, Key,
Unmap, Deactivate, KeyRelease Visibility, Destroy,
Leave and DETAIL is the button number for ButtonPress,
ButtonRelease and DETAIL is the Keysym for KeyPress and
KeyRelease. Examples are
<Control-Button-1> for pressing Control and mouse button 1 or
<Alt-A> for pressing A and the Alt key (KeyPress can be omitted).
An event pattern can also be a virtual event of the form
<<AString>> where AString can be arbitrary. This
event can be generated by event_generate.
If events are concatenated they must appear shortly
after each other.
FUNC will be called if the event sequence occurs with an
instance of Event as argument. If the return value of FUNC is
"break" no further bound function is invoked.
An additional boolean parameter ADD specifies whether FUNC will
be called additionally to the other bound function or whether
it will replace the previous function.
Bind will return an identifier to allow deletion of the bound function with
unbind without memory leak.
If FUNC or SEQUENCE is omitted the bound function or list
of bound events are returned."""
return self._bind(('bind', self._w), sequence, func, add)
def unbind(self, sequence, funcid=None):
"""Unbind for this widget for event SEQUENCE the
function identified with FUNCID."""
self.tk.call('bind', self._w, sequence, '')
if funcid:
self.deletecommand(funcid)
def bind_all(self, sequence=None, func=None, add=None):
"""Bind to all widgets at an event SEQUENCE a call to function FUNC.
An additional boolean parameter ADD specifies whether FUNC will
be called additionally to the other bound function or whether
it will replace the previous function. See bind for the return value."""
return self._bind(('bind', 'all'), sequence, func, add, 0)
def unbind_all(self, sequence):
"""Unbind for all widgets for event SEQUENCE all functions."""
self.tk.call('bind', 'all' , sequence, '')
def bind_class(self, className, sequence=None, func=None, add=None):
"""Bind to widgets with bindtag CLASSNAME at event
SEQUENCE a call of function FUNC. An additional
boolean parameter ADD specifies whether FUNC will be
called additionally to the other bound function or
whether it will replace the previous function. See bind for
the return value."""